public static void bubbleSort(int [] a, int n){
	for (int i = 0; i < n - 1; i++) {
		for (int j = 0; j < n - i - 1; j++) {
			if (a[j] > a[j + 1]) {
				int temp = a[j];
				a[j] = a[j + 1];
				a[j + 1] = temp;
			}
		}
	}
}
